package org.cl.springcloud.controller;

import lombok.extern.slf4j.Slf4j;
import org.cl.springcloud.entity.CommonResult;
import org.cl.springcloud.entity.Payment;
import org.cl.springcloud.lb.LoadBalancer;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
@Slf4j
public class OrderController {
    //单机版
    //private static final String PAYMENT_URL="http://localhost:8001";
    // 集群版
    private static final String PAYMENT_URL="http://cloud-payment-service";
    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;
    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/comsumer/payment/lb")
    public String getPaymentLb(){
        System.out.println("进来了");
        List<ServiceInstance> instances = discoveryClient.getInstances("cloud-payment-service");
        if(instances==null || instances.size()<=0){
            return null;
        }
        ServiceInstance instancd = loadBalancer.instancd(instances);
        URI uri = instancd.getUri();
        return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        System.out.println(payment.getSerial());
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }
    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }
}
